Fintech, Neobanks and Embedded Finance

In 2021 investors put roughly $140 billion into fintech start-ups worldwide (Crunchbase counted ~$141.6 billion), valued Chime at $25 billion and Klarna at $45.6 billion, and assumed that any app with a debit card could become a bank. By 2025 annual funding had fallen to ~$52 billion (CB Insights; Crunchbase), Chime had listed at ~$11.6 billion, Klarna at ~$15 billion, and Synapse, a middleware company that connected fintech apps to small banks, had collapsed and left a shortfall reported at $65–96 million in customer funds. Yet the reset also produced durable winners: SoFi, a fintech that bought its way to a national bank charter, earned ~$481 million in 2025 on $37.5 billion of deposits; Chime guided to its first full year of GAAP profit in 2026; and the OCC opened the charter door again, conditionally approving national banks for Mercury, Nubank and Revolut in 2026. This section explains the neobank models (partner-bank, licensed digital bank), the banking-as-a-service (BaaS) stack and how its money flows, embedded finance in software platforms, why interchange-funded models are fragile, how rates, regulation and the 2021 peak shaped the industry, and the 2025–26 charter wave, including foreign digital banks entering the US. A worked example compares an interchange-funded neobank with a licensed one; a case study tells the Synapse story.